Book/Report

FZJ-2018-01522

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Untersuchungen an Katalysatoren zur Reduktion von Stickoxiden und Sauerstoff mit Wasserstoff

Barnert-Wiemer, H.FZJ* ; Bendick, B.FZJ*

1980
Kernforschungsanlage Jülich, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/17515

Report No.: Juel-1677

Abstract: During the dissolution of nuclear fuel in nitric acid nitric oxides are formed, which are released into the off-gas together with the gaseous fission products. The main component of dissolver off-gas is water saturated air. Before the removal of the fission noble gases xenon and krypton in a cryogenic separation unit, pretreatment steps are necessary, one of which is the removal of oxygen and nitric oxides by reaction with hydrogen. The goal of the work described herein was to find a catalyst suitable for the reduction of oxygen and nitric oxides with hydrogen. lt is destred to have a residual concentration of oxygen and nitric oxide < 1 ppm and at the same time to suppress the reactton Zeading to the formation of ammonia. Three catalysts (one noble metal, one nicket and one ruthentum catalyst) have been tested at various temperatures and space velocities. All three catalysts removed oxygen and nitric oxides to below 1 ppm, but only the ruthenium catalyst suppressed the formation of ammonia.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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Database coverage:

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